Rotary pump.



A. FOURNIER.

ROTARY PUMP.

APPLICATION FILED MAYB, 1910.

Patented Mar.28, 1911.

2 SHEETS-SHEET l.

T. mm

ma 0 M a M WITNESSES:

ATTORNEYS A. POURNIER.

ROTARY PUMP.

APPLICATION FILED MAY 6, 1910.

Patented Mar. 28, 1911 2 SHEETS-SHEET 2.

ATTORNEYS UNITED STATES.

ADELBERT FOURNIER, OF SIRAGUE, WASHINGTON, ASSIGNOB T0 JAMES F. OBRIEN,OF SEATTLE, WASHINGTON.

ROTARY PUMP.

Specification of Letters Patent.

Patented Mar. 28, 1911.

Application filed May 6, 1910. Serial No. 559,684.

To all whom it may concern.-

vBe it known that I, ADELBERT FoUnxmn,

a citizen of the United States, and a resident for general pumpingpurposes and arranged v to utilize the driving power to the fullest ed acylinder advantage, with a view to produce a continuous and forcefulstream.

For the purpose mentioned, use is made of a cylinder having an inlet andan outlet, and in which is eccentrically mounted a ringshaped pistonoperating in conjunction with a sliding abutment arranged in thecylinder between the inlet and the outlet, the abutment being connectedwith and operating in conjunction with the said piston, and the latterbeing rolled off on the inner surface of the said cylinder by the actionof rollers mounted on arms attached to a driving shaft, eccentricallypassing through the said piston and axially through the said cylinder.

A practical embodiment of the invention is represented in theaccompanying drawings orming a part of this specification, in whichsimilar characters of reference indicate corresponding parts in all theviews.

Figure l-is a cross section of the rotary pump on the line 1-1 of Fig.2; Fig. 2 is a longitudinal central section of the same; Fig. 3 is aninverted sectional plan view of the same, on the line 3-3 of is anenlarged perspgctive view. of the abutment; and Fig. 5 is a like view ofone of the connecting slides for connecting the piston with theabutment.

On a suitably constructed base A is mount- B, provided with an inlet 0and'an outlet D, opening tangentially into the cylinder B, as plainlyindicated in Fig. 1. A ring-shaped piston E is mounted to roll over onthe inner surface of the cylinder B, and in order to actuate this pistonthe fol lowin arrangementis made: The driving shaft F extends axiallythrough the cylinder and eccentrically through the piston E, and one endof the said drivingshaft F is journa-led in a bearing B formed on orattached to the cylinder head B (see Fig. 2), and the opposite end ofthe shaft F extends Fig. 1; Fig. 4

the outlet side through a stuffing box dcr head 13*. On the shaft Fwithin the piston E are secured arms G, by the use of keys F or othersuitablemeans, and on the said arms G are adjustably secured eye-bolts Gcarrying a rod G on which are mounted rollers H- in contact with theinner surface of the piston E. lVhen the shaft F is rotated in thedirection of the arrow 6/, then the rollers H acting onthe the piston Ecause the latter to roll oft" on the inner surface of the cylinder B, inthe direction of the arrow um on the inlet side drawing in the liquidinner surface of of the cylinder for through the inlet 0 and to forcethe drawn in liquid out through the outlet 1).

Between the inlet C and the outlet -D is formed an abutment chamber B,in which is mounted-lo slide an abutment I in engage ment with theperipheral surface of the piston 10, so as to separate the inlet side ofthe cylinder from the outlet side, as will be readily understood byreference to Fig. 1. The abutment I is pressed on at the top by themiddle portion of a flat sp with its ends the lugs K of slides K,mounted to slide in grooves B, formed in the cylinder headsB andB andopening into the sides of the abutment chamber The lower ends of theslides K are provided with steps K engaging the sides of, the piston E,so that when the latter rolls around in the cylinder B, the abutment Iis caused to slide up and down with the piston E, as the latter travelsaround in the cylinder B. By having the spring J interposed between theabutment I and the slides K, the said abutment is yieldingly mounted,and hence .always is pressed in contact with the peripheral surface ofthe piston E, to prevent leakage from the inlet side of the cylinder tothereof and vice versa. As shown in Figs. 1 and 3, the thickness of the.abutment I is somewhat less than the width of the abutment ter opens atall times into the cylinder B, to allow the liquid to pass into the saidabutment chamber B to insurean easy sliding of the abutment I at thetime the pump is running.

It is understood that. when the pump is running, the pressure on theoutletside of the cylinder B, holds the abutn'icnt I against the righthand wall of the abutment chamring J, engaging chamber B, so that thelat-.

B held on the cylin' a, to produce a vacuber 13; in case the inlet andoutlet are reversed, then the abutment I is shifted over onto theleft-hand wall of the abutment chamber. Now as the slides K move ingnideways B, as indicated in Figs. land 3, itis evident that theshifting of the abutment 1 as described and with it that of the springJ, does not disconnect the latter from the slides K, and hence no changeis required in running the pump in a reverse direction from the oneabove described. The top of the abutment chamber B and the upper ends ofthe guideways B are closed by a suitable plate B bolted or otherwisefastened in place.

.Vhen the. shaft F is turned in the direction of the arrow (1, then thepiston E is rolled around in the cylinder B in the same direction, thuscausing a suction in the inlet 1, to draw the water or liquid into thecylinder B at the right-hand side thereof, and when the piston 1) passesover the top of the inner surface of the cylinder B and over theentrance of the inlet G into the cylinder, then the water below and infront of the piston E is forced over into the left-hand side of thecylinder and out through the outlet D. It is understood that during thetravel of the piston E over the entrance of the inlet C into thecylinder B, the said entrance is not completely closed, but suction iscontinually produced to draw in water continually. and consequently acontinuous stream is forced out of the outlet D. By making the eye boltsG adjustable in the arms G, the rollers H can always be held in propercontact with the inner surface of the piston E, to hold the outersurface thereof directly opposite the rollers H in contact with theinner surface of the cylinder B.

Having thus dcscribednny invention, I claim as new and desire to secureby Let ters Patent:

1. A rotary pump, comprising a cylinder having an inlet and an outlet, aring-shaped piston mounted in the cylinder to roll on the inner surfaceof the cylinder, an abutment mounted to slide in the said cylinder andconnected with the said piston to move in unisonwith the latter, adriving shaft extending eccentrically through the said piston andaxially through the said cylinder, arms on the said driving shaft,rollers in contact with the inner surface of the said piston,

. and adjustable connections between the rollers and the said arms.

2. A rotary pump, compr1smg a cylinder having a tangential inlet and atangential outlet, a ring-shaped piston mounted to roll off on the innersurface of the said cylinder, means for imparting motion to the saidpiston, an abutment mounted to slide radially in the said cylinderbetween the said inlet and the said outlet, a flat spring pressingon-t-he top of the said abutment, and slides having lugs at' their upperends engaged by the ends of said spring, the lower ends of said slidesengaging the ring-shaped piston.

3. A rotary pump, comprising a cylinder having a tangential inlet and atangential outlet, a ring-shaped piston mounted to roll off on the innersurface of the said cylinder, means for imparting motion to the saidpiston, an abutment mounted to slide radially in the said cylinderbetween the said inlet and the said outlet, slides engaging the saidring-shaped piston. and a spring interposed between the said slides andthe said abutment.

at. A rotary pump, comprising a cylinder having an inlet and an outlet,a ring-shaped piston mounted in the cylinder to roll on the innersurface of the cylinder, an abutment mounted to slide in the saidcylinder and connected with the said piston to move in unison with? thelatter, a driving shaft extending eccentrically through the said pistonand axially through the said cylinder, arms on the said driving shaftand provided with adjustable eye bolts, a rod mounted in the eyes of thesaid bolts, and rollers mounted on the said rod and in contact with theinner surface of the said ringshaped piston.

5. A rotary pump, comprising a cylinder provided in its heads withguideways, and an abutment chamber connected with the said guideways, arin -shaped piston mounted to roll off on the inner surface of the saidcylinder, means for actuating the said piston, an abutment mounted toslide in the said abutment chamber and of a thickness less than thewidth of the said abutment chamber to connect the latter at all timeswith the interior of the said cylinder, slides mounted in the saidguideways and engaging the said piston, and a spring interposed betweenthe said slides and the said abutment,

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

i DELBERT FOURNIER.-

Witnesses PIERRE BARNES, EDITH .PETERSON.

